Re: [PSES] UK extends CE mark recognition indefinitely

2023-09-19 Thread Sam Davis
In reviewing this, I don’t see that it addresses RoHS and Ecodesign directives. Would products in scope of these directives still require the UKCA mark by December 2024? SAM Davis Sr. Regulatory Engineering Manager Customer Engineering Services www.jabil.com<https://www.jabil.com/>

Re: [PSES] Is there is any advantage by using 0 ohm for ESD and EMC

2021-11-30 Thread Sam Davis
Yes. If the 0 Ohm resistor needs to be adjusted to higher impedance or removed based on experimental results, it can be done without spinning the board to change a trace. SAM Davis From: Akhil paul Sent: Monday, November 29, 2021 10:28 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES

[PSES] UL Product IQ

2021-09-09 Thread Sam Davis
I'm looking into possibly getting the upgraded UL Product IQ account for my team, and wondered if anyone had any experience with it? If so, what of the paid features do you find the most useful? https://accounts.ulprospector.com/subscriptions/iq/pricing?lang=en=1=annual --- SAM DAVIS

Semiconductor thermal protection requirement?

2003-11-13 Thread Sam Davis
Howdy all, I've got a client who heard a rumor of a safety requirement for semiconductors that entailed having some thermal cutoff. This is a semiconductor requirement, not an end-product requirement. Has anyone heard of this in an existing or upcoming requirement? Thanks, Sam This message

RE: Chemicals in test equipment

2003-10-23 Thread Sam Davis
www.epa.gov (Environmental Protection Agency) can assist you in finding what chemicals are restricted by law. From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Knudsen, Patricia J. Sent: Thursday, October 23, 2003 10:29 AM To: 'Kim Boll Jensen'; EMC

RE: Safety Standards Comparison

2003-09-24 Thread Sam Davis
concerns, such as rain and dust, could be evaluated to 60529, where the electrical safety concerns inherent to computers (shock, fire, etc.) would be evaluated to 60950. Hope this helps. Sam --- Sam Davis Product Safety Engineer Professional Testing Inc. (512)244-3371 x112 www.ptitest.com From

RE: Flat panel display monitor base holder

2003-09-09 Thread Sam Davis
Stability. From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Wani, Vijay (V) Sent: Tuesday, September 09, 2003 9:10 AM To: 'emc-p...@majordomo.ieee.org' Subject: Flat panel display monitor base holder Hello: is there any safety/EMC reason for

RE: Anybody out there gasoline (okay Petrol if I must) pumps for service stations?

2003-09-08 Thread Sam Davis
As far as safety goes, you'll need to meet Hazardous location standards. The UL standards numbers vary by protection method used, UL 1203, 913, 1604, 2279, NFPA 496. Canada has similar requirements, in CSA 30, 157, 213, and E79, as well as incorporating NFPA 496. For the IECEx scheme, see IEC

RE: Hi-Pot testing

2003-08-28 Thread Sam Davis
2. When the unit is in the field, it will have the surge protection installed, which will essentially limit any real life hipot voltages to about 500V (230V gas tube, 275VAC MOV). In real life, the unit would experience a maximum 500V hipot. However, in the case of a single fault (surge

RE: AC shut-down

2003-05-27 Thread Sam Davis
I can't confirm or deny the requirement, but I wouldn't say it's a bad idea. Often, fire suppression systems can be assisted by shutting off airflow. Chemical or biological agents, when used, will likely target the air handling system, for maximum effectiveness. It wouldn't save a building from

RE: Use of the # button on telephone dial

2003-03-20 Thread Sam Davis
In the US, some networks use it in place of the * in their features. For example, some use a #69 instead of *69. Many PBXs use the # in their codes, such as #8 (T) for transfer, then the extension. Hope this helps, Sam This message is from the IEEE EMC Society Product Safety Technical

RE: mouse heart monitor

2003-02-07 Thread Sam Davis
Thanks to all who responded. All input was helpful. Thanks, Sam From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Sam Davis Sent: Wednesday, February 05, 2003 4:01 PM To: emc-p...@majordomo.ieee.org Subject: mouse heart monitor All, I'm trying

mouse heart monitor

2003-02-05 Thread Sam Davis
All, I'm trying to work up a quote for testing a product which monitors various heart functions of living laboratory mice. Would this fall into the Medical Directive under 60601, or the LVD, under 61010? I'm just looking at the safety aspects, not EMC. The question comes up because the

RE: NRTL in the U.S.

2003-01-14 Thread Sam Davis
Another interpretation of the question may be Where is the NRTL requirement strictly enforced? (which is a much larger list than where it is required.) Where can you get away without a NRTL mark? That depends in part on the product, the market, and the distribution scheme. Which brings this

RE: TNV Test Generator

2002-12-12 Thread Sam Davis
In the US, aren't overhead power lines in the 10 kV range? The power companies send power down the lines in kV (with relatively low current), and in the neighborhood of the customer, they have a large transformer which brings the voltage down to the 120 V range, with 100s of amps for that short

RE: Short circuit tests in GR-1089

2002-12-03 Thread Sam Davis
the standard requires it (I haven't researched it), I would consider it due diligence. Sam Davis Regulatory Engineer Professional Testing Inc. (512)244-3371 x112 www.ptitest.com -Original Message- All - In consideration of the proliferation of SMPS in electronic equipment

RE: safety testing in the USA

2002-09-19 Thread Sam Davis
Another interesting point that can be made is I didn't say it was law, I said List it or I won't buy it. Depending on the product (basically, if there's a Listed competitor product on the market), you can make it happen. In the US, often a Listing mark is enforced by marketing more than law.

RE: electricity and water

2002-09-13 Thread Sam Davis
Reminds me of when I stuck tweezers into an AC outlet. I guess that was my start into Product Safety. Now that I think of it, I also liked to see things explode. It's probably for the best that I didn't go into Chemical Engineering. Just my thoughts as I head out for the weekend. Sam

RE: Are There Any Standards that Apply to Digital Cameras

2002-08-08 Thread Sam Davis
UL 6500 - Audio/Video and Musical Apparatus for Household, Commercial, and Similar Use. IEC 60065 - Audio, Video, and Similar electronic Apparatus - Safety Requirements. The UL Standard is based on this, with of course, deviations. I don't have a copy of it at my desk, so I cannot verify that

RE: HALT and HAAS

2002-07-31 Thread Sam Davis
this helps, Sam --- Sam Davis Regulatory Engineer Professional Testing Inc. (512)244-3371 x112 www.ptitest.com -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Peter Merguerian Sent: Wednesday, July 31, 2002 5:38 AM To: EMC-PSTC (E

RE: Constant for Change of Resistance formula.

2002-05-14 Thread Sam Davis
OK, I've avoided jumping in on this exhausted thread, but here's my take on the situation. It's obvious that more than a few of the posters have not performed this test. When you cannot answer a question with more than a theory, don't throw it out there as fact. You muddle the knowledge pool.

RE: UL 61010A-1

2002-05-08 Thread Sam Davis
30, 2002. Preface, p8. BTW, technically, it's based on IEC 61010-1 As far as differences go, if you purchase the standard (www.comm-2000.com) you will see that the national differences are in bold text. Hope this helps, --- Sam Davis Regulatory Engineer Professional Testing Inc. (512)244-3371 x112

RE: stun guns on aircraft

2002-05-07 Thread Sam Davis
is usually too cocky, and can be disarmed fairly easily with the right moves, where a knife wielder is usually a force to be reckoned. Sam -Original Message- From: FLOWERDEW, Peter [mailto:peter.flower...@plantronics.com] Sent: Tuesday, May 07, 2002 11:17 AM To: 'Sam Davis'; Gert Gremmen

RE: Thermal Testing

2002-05-07 Thread Sam Davis
Richard, all, I prefer the HP (now Agilent?) datalogger series over Fluke's. More channels, (my model has 3 bays of 22 channels each), included software allows for any normal type of thermocouple, as well as voltage or resistance measurements. Connects to PC with serial cable, uses minimal

RE: stun guns on aircraft

2002-05-07 Thread Sam Davis
This has nothing to do with EMC or Product safety, but with personal and public safety. I'm with Ghery. Gert, your misrepresentation of his statement is ludicrous. Statistics bear this out. Crime rates drop drastically in nations where guns are freely owned by the PUBLIC. Look at Australia.

RE: question on measuring bonding impedance

2002-04-15 Thread Sam Davis
blows or the circuit breaker trips. Even though my experience comes from my past few employers, my opinions are my own. --- Sam Davis Regulatory Engineer Professional Testing Inc. (512)244-3371 x112 www.ptitest.com -Original Message- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p

RE: Safety Certs - custom lamps

2002-03-29 Thread Sam Davis
He doesn't necessarily need field evaluations, from what I'm reading. Just because they're custom, doesn't mean the designs cannot be integrated into one UL/CSA/NRTL report. I worked at UL for a few years, and performed evaluations on portable lamps and fixtures (Luminaires now) as well as many